Two-line break

Optical instrument first went abroad for China's surveying and mapping instruments exports made a contribution.

First of all exploits of Tianjin, as represented by the Dorset and tjop export optical level; another powerhouse Zhejiang, represented by Su Yiguang enterprises, export-oriented accessories and Prism. Two-line has a long history of industrial base, traveled around the world. According to insiders, was the only level of annual export volume amounts to several tens of thousands of units. Excellent performance and good value, let the foreigner's eyes light up, and all the world to see the quality of Chinese optical surveying instruments. Early 90 's of the last century, Tianjin and Jiangsu and Zhejiang provinces have broken sporadic export situation, be the vanguard of the world exporting on a large scale.